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In the video I tried to reflect a detailed review (test) of the performance of metal ballerinas that are on sale. Machine 2M112, 450 rpm, drilling diameter 50 mm, manual feed, water cooling. I apologize for such a long video, but I think it is interesting to see how each metal ballerina works. I hope my video will be useful for you. Please like, write comments, subscribe to my channel. Special thanks to the manufacturer of the ANT drill for the bonus. At the request of interested people - here is the contact of the manufacturer of the ANT22-110 ballerina drill number 3: +380675011451 Vladimir, 🇺🇦 VIBER WhatsApp TELEGRAM • Metal ballerina than how to make ...